Window-sash lock



(No Medef.)

P. o. EWART. WINDOW SASH LOCK.

Patented Jan. 28, 1896.

@911131400523 l L/WW t7 UNITED STATES PATENT OFFICE.

PI-IILO C. `EVART, OF CINCINNATI, OHIO.

WINDOW-SASH LOCK.

SPECIFICATION forming part of Letters Patent No. 553,518, dated January28., 1896.

Application filed .Tune ll, 1895. Serial No. 552,380. (No model.)

To all whom it may concern:

Be it known that I, PHILO C. EWART, a citil zen of the United States ofAmerica, residing at Cincinnati, in the county of I-Iamilton and Stateof Ohio, have invented certain new and useful Improvements inVindow-Sash Locks, of which the following is a specification.

The obj ect of my invention is to provide simple and efficient means forsecuring the sashes of a window to each other and for locking the sashesto the window-casing when closed or open, thus permitting properventilation without danger of entry from without and preventing rattlingof the windows; and the invention consists in the device hereinafterdescribed and claimed.

In the drawings, Figure 1 is a side elevation, partially in section;Fig. 2, an end elevation, and Fig. 8 a detail of the securing-catch.

Mounted on the lower sash, A, of a Window is a bracket a, carrying a rodB, provided at its end adjacent to the upper sash with a screw b,preferably of larger diameter than the shank of the rod, and at theother end with a thumb-nut o. The opening through bracket a is of a sizecorresponding to the smaller partof the rod B, so as to allow the rod toslide back and forth, but not allow of its withdrawal from the bracketwhen in position. Mounted on rod B, between the bracket a and thumb-nutb', is a dog C, having a slot c, and adapted to slide radially upon therod. A catch D, made in the form of a right angle and having faces d andd and an overhanging lip d2, is secured to the window-casing. Thesliding dog C is adapted to take under lip cl2 and prevent raising thesash A.

The upper sash, E, is provided with a recess e, having its open endcapped with abutton e', provided with an opening e2, adapted to receivethe screw b. Cast on the inner edge of the opening e2 is a lug e3,adapted to follow the groove in the screw B.

To lock the window the upper sash is brought into a position such thatthe recess e and opening e2 are in line with the rod B, the screw isintroduced into the opening e2, the groove of the screw takes over thelug e3, and the sashes are thereby drawn together. The sliding dog C isslipped under lip cl2, and as the sashes are drawn together bythe actionof the screw the inner end of the thumb-nut b impinges on the dog C, andclamps it against the bracket a and the face cZof the catch D. Thesashes are thus secured together and secured to the casing in a verysimple manner. The impinging faces of the dog C and thumb-nut h' arepreferably serrated, so that a firm grasp is obtained between them.

To unfasten the window the screw is turned` in the reverse directionuntil the screw is disengaged from the upper sash, the dog C is slippedout from under the lip d2, and the sashes are released from each otherand from the casing.

A series of buttons, similar to e, may be arranged on the upper sash soas to enable it to be locked in any required position. The upper sashmay be lowered, locked to the lower sash, and the lower sash locked tothe window-casing,l so as to allow perfect ventilation of a room withoutdanger of having any one enter by raising the lower sash.

I claim as my invention- The combination in awindow sash lock of abracket carrying a rod provided with a screw end adapted to take throughand engage with a button in the upper sash and into an aperture therein,with a sliding dog adapted to slide relatively to the bracket and entera catch secured to the window casing, substantially as and for thepurpose set forth.

PHILO C. EWART.

Vitnesses:

ERNEST K. I-IooD, ARTHUR E. GEORGI.

